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2142025 = 52471823
BaseRepresentation
bin1000001010111101001001
311000211022021
420022331021
51022021100
6113524441
724130654
oct10127511
94024267
102142025
111233376
12873721
1359cc92
143da89b
152c4a1a
hex20af49

2142025 has 12 divisors (see below), whose sum is σ = 2714112. Its totient is φ = 1676240.

The previous prime is 2142001. The next prime is 2142029. The reversal of 2142025 is 5202412.

It is not a de Polignac number, because 2142025 - 27 = 2141897 is a prime.

It is a super-2 number, since 2×21420252 = 9176542201250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264 + ... + 2086.

It is an arithmetic number, because the mean of its divisors is an integer number (226176).

22142025 is an apocalyptic number.

2142025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2142025 is a deficient number, since it is larger than the sum of its proper divisors (572087).

2142025 is a wasteful number, since it uses less digits than its factorization.

2142025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880 (or 1875 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2142025 is about 1463.5658509271. The cubic root of 2142025 is about 128.9065083864.

Adding to 2142025 its reverse (5202412), we get a palindrome (7344437).

The spelling of 2142025 in words is "two million, one hundred forty-two thousand, twenty-five".

Divisors: 1 5 25 47 235 1175 1823 9115 45575 85681 428405 2142025